International Sigmet / Convective Sigmet
Issued by NWS
Issued by NWS
674 WSPN01 KKCI 171800 SIGP0A KZAK SIGMET ALFA 4 VALID 171800/172200 KKCI- OAKLAND OCEANIC FIR FRQ TS OBS AT 1749Z WI N3430 W17630 - N3130 W16830 - N2830 W17200 - N2930 W17715 - N3430 W17630. TOP FL370. STNR. NC.